Organic electroluminescent materials and devices

Abstract

A compound having a Pt tetradentate structure of Formula 1, is provided. In the structure of Formula 1, rings C and D each independently represent 5- or 6-membered carbocyclic or heterocyclic ring; L 1 , L 2 , and L 3 are each independently a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO 2 , SiRR′, GeRR′, alkyl, cycloalkyl, or a combination thereof; the sum of n1 and n2 is 1 or 2; X is selected from NR E , O, S, and Se; X 3 and X 4 each independently carbon or nitrogen; and one of Q 1 , Q 3 , and Q 4 is oxygen, and the remaining two of Q 1 , Q 3 , and Q 4 each represents a direct bond. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.

We claim: 
     
       1. A first organic light emitting device comprising:
 an anode; 
 a cathode; and 
 an organic layer, disposed between the anode and the cathode, comprising a compound having a Pt tetradentate structure, having the formula selected from the group consisting of: 
 
       
         
           
           
               
               
           
         
         wherein rings C and D each independently represents aryl or heteroaryl; 
         wherein R A , R B1 , R C , and R D  each independently represent mono, di, tri, tetra-substitution, or no substitution; 
         wherein R B2  represents mono, di-substitution, or no substitution; 
         wherein L 1 , L 2 , and L 3  are each independently selected from the group consisting of a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO 2 , SiRR′, GeRR′, alkyl, cycloalkyl, and combinations thereof; 
         wherein n1 and n2 are each independently an integer of 1 or 0; the sum of n1 and n2 is at least 1; when n1 is 0, L is not present; and when n2 is 0, L 2  is not present; 
         wherein X is selected from the group consisting of NR E , O, S, and Se; 
         wherein R A , R B1 , R B2 , R C , R D , R E , R, and R′ are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; 
         wherein any adjacent R A , R B , R C , R D , R E , R, and R′ are optionally joined to form a ring; 
         wherein X 3  and X 4  each independently selected from the group consisting of carbon and nitrogen; 
         wherein one of Q 1 , Q 3 , and Q 4  is oxygen, the remaining two of Q 1 , Q 3 , and Q 4  each represents a direct bond; and 
         wherein the first organic light emitting device further comprises an electron blocking layer, a hole blocking layer, or both. 
       
     
     
       2. The first organic light emitting device of  claim 1 , wherein the first organic light emitting device further comprises the hole blocking layer. 
     
     
       3. The first organic light emitting device of  claim 1 , wherein the first organic light emitting device further comprises the electron blocking layer. 
     
     
       4. The first organic light emitting device of  claim 1 , wherein the organic layer comprises an electron transporting host and a hole transporting host. 
     
     
       5. The first organic light emitting device of  claim 1 , wherein the Pt tetradentate structure has the structure of Formula 1, 
       
         
           
           
               
               
           
         
       
     
     
       6. The first organic light emitting device of  claim 1 , wherein the Pt tetradentate structure has the structure of Formula 2, 
       
         
           
           
               
               
           
         
       
     
     
       7. The first organic light emitting device of  claim 1 , wherein the first organic light emitting device is incorporated into a device selected from the group consisting of a consumer product, an electronic component module, an organic light-emitting device, and a lighting panel. 
     
     
       8. The first organic light emitting device of  claim 1 , wherein the organic layer is an emissive layer and the compound is an emissive dopant or a non-emissive dopant. 
     
     
       9. The first organic light emitting device of  claim 1 , wherein R A , R B1 , R B2 , R C , R D , R E , R, and R′ are each independently selected from the group consisting of hydrogen, deuterium, fluorine, alkyl, cycloalkyl, heteroalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, and combinations thereof. 
     
     
       10. The first organic light emitting device of  claim 1 , wherein the organic layer further comprises a host, wherein the host comprises at least one chemical group selected from the group consisting of triphenylene, carbazole, dibenzothiophene, dibenzofuran, dibenzoselenophene, azatriphenylene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene. 
     
     
       11. The first organic light emitting device of  claim 1 , wherein the organic layer further comprises a host and the host is selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       and combinations thereof. 
     
     
       12. The first organic light emitting device of  claim 1 , wherein Q 1  is oxygen, and Q 3  and Q 4  each represents a direct bond. 
     
     
       13. The first organic light emitting device of  claim 1 , wherein L 1 , L 2 , and L 3  are each independently selected from the group consisting of a direct bond, NR, O, SiRR′, alkyl, cycloalkyl, and combinations thereof. 
     
     
       14. The first organic light emitting device of  claim 1 , wherein L 1 , L 2 , and L 3  each independently represents a direct bond. 
     
     
       15. The first organic light emitting device of  claim 1 , wherein the rings of C and D are each independently selected from the group consisting of phenyl, pyridine, benzimidazole, and imidazole. 
     
     
       16. The first organic light emitting device of  claim 1 , wherein the compound is selected from the group consisting of 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein Y is selected from the group consisting of CR 1 R 2 , SiR 1 R 2 , NR 1 , O, S, and Se; 
         wherein R 1 , and R 2  are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; 
         wherein each X is selected from the group consisting of NR E , O, S, and Se; and 
         wherein any adjacent R 1 , and R 2  are optionally joined to form a ring. 
       
     
     
       17. The first organic light emitting device of  claim 1 , wherein the compound is selected from the group consisting of 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein Y is selected from the group consisting of CR 1 R 2 , SiR 1 R 2 , NR, O, S, and Se; 
         wherein R 1 , and R 2  are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and 
         wherein any adjacent R 1 , and R 2  are optionally joined to form a ring. 
       
     
     
       18. The first organic light emitting device of  claim 1 , wherein the compound is selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
       19. A consumer product comprising a first organic light emitting device, the first organic light emitting device comprising:
 an anode; 
 a cathode; and 
 an organic layer, disposed between the anode and the cathode, comprising a compound having a Pt tetradentate structure, having the formula selected from the group consisting of: 
 
       
         
           
           
               
               
           
         
         wherein rings C and D each independently represents aryl or heteroaryl; 
         wherein R A , R B1 , R C , and R D  each independently represent mono, di, tri, tetra-substitution, or no substitution; 
         wherein R B2  represents mono, di-substitution, or no substitution; 
         wherein L 1 , L 2 , and L 3  are each independently selected from the group consisting of a direct bond, BR, NR, PR, O, S, Se, C═O, S═O, SO 2 , SiRR′, GeRR′, alkyl, cycloalkyl, and combinations thereof; 
         wherein n1 and n2 are each independently an integer of 1 or 0; the sum of n1 and n2 is at least 1; when n1 is 0, L 1  is not present; and when n2 is 0, L 2  is not present; 
         wherein X is selected from the group consisting of NR E , O, S, and Se; 
         wherein R A , R B1 , R B2 , R C , R D , R E , R, and R′ are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; 
         wherein any adjacent R A , R B1 , R C , R D , R E , R, and R′ are optionally joined to form a ring; 
         wherein X 3  and X 4  each independently selected from the group consisting of carbon and nitrogen; 
         wherein one of Q 1 , Q 3 , and Q 4  is oxygen, the remaining two of Q 1 , Q 3 , and Q 4  each represents a direct bond; and 
         wherein the first organic light emitting device further comprises an electron blocking layer, a hole blocking layer, or both. 
       
     
     
       20. The consumer product of  claim 19 , wherein the consumer product is selected from the group consisting of flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads-up displays, fully or partially transparent displays, flexible displays, laser printers, telephones, cell phones, tablets, phablets, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, vehicles, wall, theater or stadium screens, and signs.